3pin vs 4pin fan?

What’s the Difference Between 3-Pin and 4-Pin Fans?

The significant difference in practice is that 4-pin fans allow for RPM to change based on the need for cooling temperature, this reduces noise and power consumption. While 3-pin can control the voltage, but the voltage can’t turn to change the fan RPM at all and accurate as much as 4 pin fans.

LFC#191 – 3pin DC Fans vs 4pin PWM Fans

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